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답안 #841622

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
841622 2023-09-01T18:47:49 Z flashmt 가장 긴 여행 (IOI23_longesttrip) C++17
85 / 100
 13 ms 612 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> longest_trip(int n, int d)
{
  mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
  vector<int> c[2];
  c[0] = {0};
  for (int i = 1; i < n; i++)
    if (empty(c[1]))
    {
      int x = c[0].back();
      if (are_connected({i}, {x})) c[0].push_back(i);
      else c[1].push_back(i);
    }
    else
    {
      int u = rng() % 2;
      int x = c[u].back(), y = c[u ^ 1].back();
      if (are_connected({i}, {x})) c[u].push_back(i);
      else if (are_connected({i}, {y})) c[u ^ 1].push_back(i);
      else
      {
        while (!empty(c[u ^ 1]))
        {
          c[u].push_back(c[u ^ 1].back());
          c[u ^ 1].pop_back();
        }
        c[u ^ 1].push_back(i);
      }
    }

  if (size(c[1]) > size(c[0]))
    swap(c[0], c[1]);

  if (empty(c[1]))
    return c[0];

  if (!are_connected(c[0], c[1]))
    return c[0];

  for (int u : {0, 1})
  {
    int v = u ^ 1;
    int x = c[v][0];

    if (are_connected({x}, {c[u][0]}))
    {
      reverse(begin(c[u]), end(c[u]));
      for (int y : c[v])
        c[u].push_back(y);
      return c[u];
    }

    if (are_connected({x}, {c[u].back()}))
    {
      for (int y : c[v])
        c[u].push_back(y);
      return c[u];
    }
  }

  // both c[0] and c[1] are cycles
  int low = 0, high = size(c[0]);
  while (high - low > 1)
  {
    int mid = (low + high) / 2;
    if (are_connected(vector<int>(begin(c[0]) + low, begin(c[0]) + mid), c[1])) high = mid;
    else low = mid;
  }
  int id0 = low;

  low = 0, high = size(c[1]);
  while (high - low > 1)
  {
    int mid = (low + high) / 2;
    if (are_connected(vector<int>(begin(c[1]) + low, begin(c[1]) + mid), {c[0][id0]})) high = mid;
    else low = mid;
  }
  int id1 = low;

  if (id0 < size(c[0]) - 1)
    rotate(begin(c[0]), begin(c[0]) + (id0 + 1), end(c[0]));
  rotate(begin(c[1]), begin(c[1]) + id1, end(c[1]));
  for (int i : c[1])
    c[0].push_back(i);
  return c[0];
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:83:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |   if (id0 < size(c[0]) - 1)
      |       ~~~~^~~~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 5 ms 340 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 4 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 4 ms 600 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 4 ms 344 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 4 ms 344 KB Output is correct
12 Correct 6 ms 604 KB Output is correct
13 Correct 5 ms 440 KB Output is correct

Subtask #3
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 440 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 7 ms 344 KB Output is correct
8 Correct 5 ms 600 KB Output is correct
9 Correct 4 ms 432 KB Output is correct
10 Correct 5 ms 600 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 440 KB Output is correct
13 Correct 4 ms 440 KB Output is correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 8 ms 344 KB Output is correct
17 Correct 6 ms 352 KB Output is correct
18 Correct 5 ms 600 KB Output is correct
19 Correct 5 ms 344 KB Output is correct
20 Correct 5 ms 600 KB Output is correct
21 Correct 5 ms 440 KB Output is correct
22 Correct 5 ms 444 KB Output is correct
23 Correct 6 ms 444 KB Output is correct
24 Correct 5 ms 600 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 10 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 7 ms 344 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 7 ms 344 KB Output is correct
33 Correct 6 ms 344 KB Output is correct
34 Correct 6 ms 344 KB Output is correct
35 Correct 7 ms 344 KB Output is correct
36 Correct 5 ms 600 KB Output is correct
37 Correct 8 ms 600 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 6 ms 600 KB Output is correct
40 Correct 6 ms 608 KB Output is correct
41 Correct 6 ms 344 KB Output is correct
42 Correct 6 ms 344 KB Output is correct
43 Correct 8 ms 600 KB Output is correct
44 Correct 6 ms 344 KB Output is correct
45 Correct 9 ms 344 KB Output is correct
46 Correct 13 ms 344 KB Output is correct
47 Correct 9 ms 344 KB Output is correct
48 Correct 8 ms 344 KB Output is correct
49 Correct 12 ms 344 KB Output is correct
50 Correct 6 ms 432 KB Output is correct
51 Correct 8 ms 596 KB Output is correct
52 Correct 7 ms 344 KB Output is correct
53 Correct 6 ms 352 KB Output is correct
54 Correct 7 ms 356 KB Output is correct
55 Correct 6 ms 344 KB Output is correct
56 Correct 6 ms 344 KB Output is correct
57 Correct 7 ms 344 KB Output is correct
58 Correct 7 ms 344 KB Output is correct
59 Correct 8 ms 600 KB Output is correct
60 Correct 8 ms 436 KB Output is correct
61 Correct 7 ms 440 KB Output is correct
62 Correct 7 ms 612 KB Output is correct
63 Correct 6 ms 600 KB Output is correct
64 Correct 7 ms 344 KB Output is correct

Subtask #4
45.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 4 ms 344 KB Output is correct
3 Correct 4 ms 344 KB Output is correct
4 Correct 4 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 4 ms 436 KB Output is correct
9 Correct 4 ms 600 KB Output is correct
10 Correct 5 ms 380 KB Output is correct
11 Correct 4 ms 344 KB Output is correct
12 Correct 5 ms 604 KB Output is correct
13 Correct 5 ms 436 KB Output is correct
14 Correct 8 ms 420 KB Output is correct
15 Correct 11 ms 344 KB Output is correct
16 Correct 8 ms 344 KB Output is correct
17 Correct 5 ms 344 KB Output is correct
18 Correct 6 ms 436 KB Output is correct
19 Correct 5 ms 440 KB Output is correct
20 Correct 6 ms 600 KB Output is correct
21 Correct 7 ms 344 KB Output is correct
22 Correct 8 ms 344 KB Output is correct
23 Correct 6 ms 344 KB Output is correct
24 Correct 8 ms 344 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 5 ms 344 KB Output is correct
27 Correct 6 ms 344 KB Output is correct
28 Correct 6 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 5 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 10 ms 344 KB Output is correct
33 Correct 11 ms 344 KB Output is correct
34 Correct 12 ms 344 KB Output is correct
35 Correct 8 ms 344 KB Output is correct
36 Correct 11 ms 344 KB Output is correct
37 Correct 6 ms 436 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 7 ms 344 KB Output is correct
40 Correct 6 ms 600 KB Output is correct
41 Correct 7 ms 344 KB Output is correct
42 Correct 7 ms 344 KB Output is correct
43 Correct 5 ms 440 KB Output is correct
44 Correct 5 ms 440 KB Output is correct
45 Correct 5 ms 444 KB Output is correct
46 Correct 5 ms 440 KB Output is correct
47 Correct 6 ms 344 KB Output is correct
48 Correct 7 ms 344 KB Output is correct
49 Correct 7 ms 344 KB Output is correct
50 Correct 7 ms 600 KB Output is correct
51 Correct 7 ms 344 KB Output is correct
52 Correct 6 ms 344 KB Output is correct
53 Correct 6 ms 600 KB Output is correct
54 Correct 6 ms 600 KB Output is correct
55 Correct 7 ms 608 KB Output is correct
56 Correct 8 ms 600 KB Output is correct
57 Correct 7 ms 600 KB Output is correct
58 Correct 6 ms 356 KB Output is correct
59 Correct 7 ms 600 KB Output is correct
60 Correct 7 ms 600 KB Output is correct
61 Correct 6 ms 344 KB Output is correct
62 Correct 5 ms 600 KB Output is correct
63 Partially correct 7 ms 600 KB Output is partially correct
64 Partially correct 7 ms 344 KB Output is partially correct
65 Partially correct 7 ms 344 KB Output is partially correct
66 Partially correct 8 ms 440 KB Output is partially correct
67 Partially correct 7 ms 344 KB Output is partially correct
68 Partially correct 7 ms 608 KB Output is partially correct
69 Partially correct 7 ms 600 KB Output is partially correct
70 Partially correct 8 ms 344 KB Output is partially correct
71 Partially correct 8 ms 600 KB Output is partially correct
72 Partially correct 8 ms 344 KB Output is partially correct
73 Partially correct 7 ms 600 KB Output is partially correct
74 Partially correct 7 ms 440 KB Output is partially correct
75 Partially correct 8 ms 600 KB Output is partially correct
76 Partially correct 7 ms 344 KB Output is partially correct
77 Partially correct 7 ms 344 KB Output is partially correct
78 Partially correct 8 ms 600 KB Output is partially correct
79 Partially correct 8 ms 600 KB Output is partially correct
80 Partially correct 7 ms 600 KB Output is partially correct
81 Partially correct 7 ms 344 KB Output is partially correct
82 Partially correct 7 ms 344 KB Output is partially correct